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PROBLEM TO BE SOLVED: To break high current even in a high voltage circuit by utilizing permanent magnets and appropriately rotating an arc in the peripheral direction of a contact to prevent the accumulation of the arc in the specific portion. SOLUTION: Permanent magnets 21a, 21b are arranged on th...

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Bibliographische Detailangaben
Hauptverfasser: NIWA YOSHIMITSU, NITTA YOSHIMI, SASAGE KOSUKE, YOKOKURA KUNIO
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To break high current even in a high voltage circuit by utilizing permanent magnets and appropriately rotating an arc in the peripheral direction of a contact to prevent the accumulation of the arc in the specific portion. SOLUTION: Permanent magnets 21a, 21b are arranged on the back side of a fixed side contact, 19 so as to locate a fixed side power supply shaft 15 between them, and permanent magnets 22a, 22b are arranged on the back side of a moving side contact 20, so as to locate a moving side power supply shaft 16 between them. Magnetic poles of the permanent magnets 21a, 21b, 22a, 22b are arranged so as to form N poles on the outer circumferential side and S poles on the center side, for example, so that the outside in the diameter direction of the fixed side contact 19 or the moving side contact 20 coincides with the center part side, and a magnetic flux along the diameter direction is generated between the contacts.